If 19 June 2001 is Tuesday, then what will be the day of the week on 21 August 2009?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Friday.
Number of days from 19 June 2001 to 31 December 2001 ⇒ 11 + 31 + 31 + 30 + 31 + 30 + 31 = 195
Number of days from 1 January 2002 to 31 December 2008 ⇒ (7 × 365) + 2 = 2557 (2 leap year)
Number of days from 1 January 2009 to 21 August 2009 ⇒ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 21 = 233
So, the total number of days from 19 June 2001 to 21 August 2009 ⇒ 195 + 2557 + 233 = 2985 ÷ 7 = 3 (Odd days)
Thus, 21 August 2009 = Tuesday + 3 = Friday